Paresis afflicted 85 out of a flock of 770 young Merino ewes kept on old wheat lands in the western Cape during a period of drought. Many of the paretic ewes died. The vegetation was sparse and was dominated by Trachyandra ...

Electron microscopy revealed that 80% of captured vervet monkeys, held in quarantine for experimental use, showed extensive proliferation of spiral-shaped bacteria on the mucosal epithelium of the large bowel. A consortium, ...

The addition of 2 % pooled rabbit serum to semi-solid commercial EMJH medium with EMJH enrichment and 0,5 mg of 5-fluorouracil per ml was found to enhance the growth rate and success of isolation of Leptospira interrogans ...

A total of 917 Mycoplasma isolations were made from 4 092 specimens originating from 2 874 cattle in private herds and at AI stations. The percentages of isolations from the different sources were: cervico-vaginal mucus ...

Coubrough, R.I.; Bigalke, R.D.(Published by The Government Printer, Pretoria, 1985)

The effect of both environmental and management related stressors on fertility is discussed. While environmental heat as a stressor is significant in disrupting normal reproductive cyclicity, management induced stress is ...

MacIvor, K.M.; Bigalke, R.D.(Published by the Government Printer, Pretoria., 1985)

Three domestic and 12 wild species of ungulate have been recorded as hosts of Rhipicephalus glabroscutatum. The major site of attachment for larvae, nymphs and adults is around the hooves and on the lower legs. This tick ...

Erasmus, J.A.; Bigalke, R.D.(Published by the Government Printer, Pretoria., 1985)

When conventional techniques were applied to 84 isolates of Staphylococcus aureus from milk samples, it was found that they were all catalase and phosphatase positive and oxidase negative. They all fermented glucose within ...

Bigalke, R.D.; Bigalke, R.D.(Published by The Government Printer, Pretoria, 1985)

This lecture commences with a synopsis of the present activities and organization of the world-famous Veterinary Research Institute in South Africa, colloquially and internationally known as Onderstepoort. Some of the major ...

During scanning electron microscopy (SEM) of the tegument of Schistosoma mattheei, a structure was observed within the nippled tubercles.
It is postulated that it is a sensory receptor with a tactile function.

Field outbreaks of a syndrome of unknown aetiology associated with the grazing of green oats (Avena sativa) in the south-western Cape Province were characterized by diarrhoea, photosensitivity and death in goats and by ...

Cowdria ruminantium was cultivated in a calf endothelial cell line after the cells had been irradiated at 45 & 90 GY. Another experiment in which the inoculum and non-irradiated cells were centrifuged together also yielded ...

From July 1979 - December 1980, 48 springbok were culled for a parasite survey at Benfontein. Lice were
the dominant parasites and reached a peak in September. Damalinia antidorcus, Linognathus antidorcitis,
Linognathus ...

Leptospira inlerrogans serovar hardjo was isolated from urine from dairy cattle in the Onderstepoort area.
This was the first successful isolation of this serovar as sole agent causing an abortion storm in the Republic ...

Theodoridis, A.; Bigalke, R.D.(Published by The Government Printer, Pretoria, 1985)

Herpesviruses, previously isolated from cattle (Theodoridis, 1978), were further studied and provisionally placed in the bovid herpesvirus 4 (BHV-4) group. Major differences were found between IBR-IPV (BHV-1) and BHV-4 ...

Giesecke, W.H.; Bigalke, R.D.(Published by The Government Printer, Pretoria, 1985)

The appropriate literature has been reviewed for the purpose of defining the phenomenon of stress in lactating dairy cattle, establishing a baseline concept of lactation stress and emphasizing the most significant aspects ...

Murphy, F.A.; Bigalke, R.D.(Published by The Government Printer, Pretoria, 1985)

From the time of the first modern studies of infectious diseases, by Koch, Pasteur, Theiler and their colleagues, it has been clear that laboratory investigation must be complemented by epidemiologic investigation.
The ...

The history of the main bovine tick-borne diseases occurring in South Africa and the role Onderstepoort played in their identification and control is briefly reviewed. The present attitudes regarding the control of tickborne ...

Nevill, E.M.; Bigalke, R.D.(Published by The Government Printer, Pretoria, 1985)

The possible adverse effect of arsenical tick control dips on Parafilaria bovicola infections was investigated in 48 artificially infected cattle. A treatment group of 24 cattle was dipped in a plunge dip containing 1600 ...

A paralytic condition of farm stock in South West Africa, characterized by prominent neuronal and some mild extraneuronal pigmentation, is described. The distribution of the pigment, which was mainly located in the larger ...